It's not hard at all. Just a matter of me finding the time to do it. Look at the CurrentGalleryItems functions as an example of how to paginate. You can try it yourself. If you get it working, let me know and I'll check in the change.

Sorry about that. I think I got halfway through implementing Galleria and decided to change direction. Galleria is not a valid UI right now.

I'm in the process of overhauling the whole UI system on ImageGallery that will allow you to plugin any UI you like with just a few lines of code, so Galleria will be possible once I get all that figured out.